Experience accurate power measurement with the SRAM Rival AXS D1 Dub Wide left crank, a lightweight aluminum arm that blends seamlessly into your bike. Its built‑in sensor delivers real‑time wattage data via wireless AXS, while the anodized finish resists corrosion and the quick‑release bolt simplifies mounting. The 170 mm length fits most frames, making it ideal for riders seeking reliable performance without added weight.